Towel rack



FIG. 1 is a top plan view of a towel rack showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof, the back view being a mirror image;

FIG. 4 is a right end elevational view thereof, the left end being a mirror image; and,

FIG. 5 is a perspective view thereof with a supporting structure which is not part of the design, shown in broken lines. 

The ornamental design for towel rack, as shown and described. 